Depends he could use grams or kilograms.I suggest grams depending.
Answer:
and
Step-by-step explanation:

Any point on this line will do.
For this example, let's find the x and y intercepts by plugging in 0 for x and y.
You'll get
and 

Let 'x' represent the number of baskets and let 'y' be the total cost.
Since the paint costs 14.50 and each basket cost 7.25, then we have the following function:

To find the cost of 4 baskets, we can make x = 4 and solve for y:

therefore, the cost of painting 4 baskets is $43.50
Please enclose that -3/5 in parentheses: <span>y+1= (−3/5)(x−4)
</span>
Let's use the intercept method to graph this line.
First, set x = 0 and find y; this y will be the y-coordinate of the vertical intercept:
y+1= (−3/5)(0−4) => y = -1 + 12/5 = -5/5 + 12/5 = 7/5. Plot (0, 7/5).
Next, set y = 0 and find x; this will give us the coordinate of the horiz. int.:
0+1= (−3/5)(x−4) => -5/3 = x - 4, or x = 4- 5/3, or x = 7/3. Plot (7/3, 0).
Now draw a straight line thru these two points.